A Metropolitan Police spokesman said: "Officers from the Met’s Counter Terrorism Command are investigating after a suspicious item was found on a tube earlier today.

"Shortly after 11:00am on Thursday, 20 October, the British Transport Police was called to North Greenwich Underground Station after train staff reported finding a suspicious item on a train travelling eastbound on the Jubilee Line.

"The station was evacuated and remains closed.

"Specialist officers from the Met and BTP are in attendance and a controlled detonation has since taken place to ensure the item is safe.

"While we are keeping an open mind, the Met’s Counter Terrorism Command is leading the investigation because it has the expertise to deal with incidents of this kind.

“British Transport Police is supporting them in their investigation.

"We are asking travellers to check with Transport for London before starting their journey."